Musk said he anticipated production would reach 20,000 per month by December. He also tweeted there would be a handover party for the first 30 Model 3 customers.

The Model 3 car is set to start around $35,000. A $7,500 federal electric tax car credit could slash the cost down to $27,500 -- which is cheaper than other cars in the fleet, running from $68,000 and up. The sporty vehicle fits five people and will be able to go 215 miles before needing a recharge.

To secure a car, drivers will have to put down a $1,000 and may not get a car until 2018. As the Associated Press notes, Tesla hasn't always had the best track record for meeting its production goals and even if the Model 3 is on time, Tesla will still have to increase its charging stations and stores by at least 30 percent to service the swath of new customers.

On Twitter, not everyone was as skeptical about Tesla's ability to deliver.